package cn.tedu.sp10.fallback;

import cn.tedu.web.util.JsonResult;
import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.stereotype.Component;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

@Component
public class OrderFB implements FallbackProvider {
    //要返回serviced-id
    //表示这个降级类,是针对哪个服务进行降级
    @Override
    public String getRoute() {
        return "order-service";
        // return "*";
    }
    
    @Override
    public ClientHttpResponse fallbackResponse(String route, Throwable cause) {
      //返回降级响应
        //在response对象中,要设置http协议的状态码,协议体
        return new ClientHttpResponse() {
            @Override
            public HttpStatus getStatusCode() throws IOException {

                return HttpStatus.OK;
            }

            @Override
            public int getRawStatusCode() throws IOException {
                return HttpStatus.OK.value();
            }

            @Override
            public String getStatusText() throws IOException {
                return HttpStatus.OK.getReasonPhrase();
            }

            @Override
            public void close() {

            }

            @Override
            public InputStream getBody() throws IOException {
                String json=JsonResult.err().msg("调用订单失败").toString();
                return new ByteArrayInputStream(json.getBytes());
            }

            @Override
            public HttpHeaders getHeaders() {
                HttpHeaders h=new HttpHeaders();
                h.setContentType(MediaType.APPLICATION_JSON);
                return h;
            }
        };
    }


}
